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Finding the Fourth Proportional to 159,479.64, 220,081.95 and 87,859.44

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Solution

The fourth proportional to 159,479.64, 220,081.95 and 87,859.44 is: 121,246.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,479.64 : 220,081.95 = 87,859.44 : x
  2. Step 2: Convert to fraction form
    159,479.64/220,081.95 = 87,859.44/x
  3. Step 3: Cross multiply
    159,479.64x = 220,081.95 × 87,859.44
  4. Step 4: Simplify right side
    159,479.64x = 19,336,276,881.11
  5. Step 5: Solve for x
    x = 19,336,276,881.11/159,479.64
  6. Step 6: Final answer
    x = 121,246.05

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.